Glassware forming machine



Oct. 13, 1931,. J. P. BENOIT GLASSWARE FORMING MACHINE Filed June 27,1930 2 Sheets-Sheet l i4 i2 T11 ,`f 7.2%@ Er/y\ i4 .wir

@E- WWW Oct. 13, 1931. J. P. BENOIT GLASSWARE FQRMING MACHINE 2Sheets-Sheet 2 Filed June 27, 1930 gm'ntoz I ticle of glassware beingproduced is Patented Oct. 13, 1931 UNITED' STATES PATENT OFFICE JOmH P.BENOIT, Ol' ALTON, ILLINOIS, .ASBGNOR TO OWENS-ILLDVOIS GLASS COM- PANY,A CORPORATION OF OHIO GLABSWABE FOBHING Mcm Application led June 27,1930. Serial No. 484,363.

The present invention relates to improvements in machines for forminghollow glasswareiand more particularly to the mold carrier construction,

One ty e of machine includes a series of partible'b ank molds adapted tobe brought 1n succession into contact with the surface of a supply bodyof molten glass for the purpose of obtaining mold charges. Coo eratingwith each blank mold is a neck mo d whichl forms the finish andneckportion of the article of glassware bein produced. Just before themolds are broug t into contact with the molten glass the blank mold isclosed and thereby moved into a position in register with the corresonding neck mold. While the open lower len of the blank mold is incontact with the glass, vacuum is applied to the blank and neck moldcavities to thereby raise a measured quantity of glass into saidcavities. In this manner the; ar-

ven its initial shape, preparatory to being p aced in a finishing moldwherein said article is expanded to its finished form. Frequently, dueto improper enfgagement between the adjacent surfaces o the blank and.neck molds, outside air leaks into the mold cavities during the moldcharging operation. This results in partial filling of the molds and,therefore, the formation of a blank or parison which is underweight andfrequentl distorted in one respect or another. Suc conditions very oftenresult in the production of an article of glassware which cannot bemarketed because it does not contain sufiicient glass to withstandordinarily rougl usage. Accordingly, such articles must discarded. Theleakage of air is` also objectionable because of waste of wer, loweringVof the vacuum, and slowing own of production,

The resent invention has for its main object t e provision of improvedmeans for bringing the neck and blank molds into cooperative relation,such means insuring positive sealing engagement between the molds sothat loss of vacuum due to ingress of air between the molds is entirelyavoided. To this end my improvement provides novel means for lifting theblank mold into snu contact with the corresponding neck mol immediatelyafter the blank mold has completely closed and just prior to engagement1tween the mold and supply body of molten g ass.

A further object is the provision of novel means of the above character,capable of embodiment in glassware forming machines now 1n use withoutrequirin extensive alteration or re lacement of stan ard parts.

Ot er objects will be in part apparent and in art pointed outhereinafter.

n the accompanying drawings: Fig. 1 is a fragmentary plan viewillustratmg the application of my invention to a partible blank mold.

Fi 2 is a sectional elevation taken substantlally along the line'II--IIof Fig. 1, showing blank mold closed.

Fi 3 is a view similar to Fig. 2 showing the b ank mold o n and spaceddownwardl a short distance om the corresponding nec mold.

Fi 4 is a detail plan view of one of the blan mold section sup ortingarms.

Fig. 5 is a side elevation thereof.

Fi 6 is a fragmenta plan view of a stan ard type blank molldy armmodified in accordance with the resent invention.

Fig. 7 is a sectiona view taken substantially along the line VII-VII ofFig. 6.

In the drawings, illustrating the preferred embodiment of my invention,the partible blank mold 10 of which there may be an annular series, iscomposed of two sections 11 suitably supported on blank mold arms 12connected to a vertical hinge pin 13 about which said arms 'ma oscillateto alternately open and close said lank mold. Connector bars 14 orlinks, are pivoted at one end to the' mold arms 12 and at lthe other endto suitable mechanism (not shown), for alternatel opening and closin themold. A neck mol 15 individual to the lank mold 10 is arranged in aplane above the latter and in such position that it registers withv theblank mold during a redetermined portion of each cycle of operations. Aplunger 16 coo' rates with the neck mold in forming the 'sh on theaddition, provides an initial blow opening 1n to leakage of air into themolds between the,

horizontal meeting faces thereof, and consequent artial filling of saidvcavities with molten g ass, the resent invention provides means whereb te blank mold 10, immediately upon ing completely closed and prior todipping into the glass, is move verticall upward suliciently to cause apositive .seal

n tween the meeting surfaces of said molds. This is accomplished by aconstruction substantially as will now be set forth.

Each blank mold'section 11 is directly connected to a holder 17 (Figs.3, 4, and 5) which is mounted upon one of the mold arms 12 for movementalong an inclined path upon said arm, at times, as will be describedpresently. Each holder 17 comprises an arcuate bar 18 connected midwaylits length to a cam plate 19 whichis formed at its outer end with aslotted finger 20. Y Through a vertical slot 21 in said linger, anattaching bolt 22 or screw extends, to provide connection between saidholder and t e corresponding blank mold arm 12. An upstanding stud 23 onthe cam 'late v 19 projects into an o ning 24 in the orizontal Hangs 25rovided at the upper end of the blan mo fsection'll. Thus, connection isprovided tween the blank mold sections 11 and the mold arms 12 so thatthey move as a unit about the axis of the hinge pin 13. An inclined camsurface 26 is formed on the lower side of the camv late 19 andconstantly contacts with a simi arly formed cam surface 27 rovided onthe upper side of the blank mold) arm 12. A major portion of the camplate 19 slidingly lits in an upwardly opening channel, the bottom ofwhich constitutes the cam surface 27. Thus, the holders 17 are heldagainst lateral movement and are positively guided along the desiredpath while moving relative to the mold arms 12.

Pads 12a formed on each blank mold arm 12 sup ort the blank mold untilit begins its upwar movement for intimate contact with the correspondingneck mold 15. Pads 18 (Fig. 4) on the-holder 17 have supportingengagement with the corresponding blank mold sections during upwardmovement of thelatter and while said sections 'contact with the neckmold sections.

In operation, the blank mold sections 11 are brought together bymovement of the arms 12, prior to reaching the mold charg ing station sothat together with neck mold 15 there is provided means for gatheringavmold charge and giving it the desired shape of the blank or parison.Considerable pressure is applied to the blank mold sections through thearms 12 to insure sealing contact between theabutting or sealingsurfacesof the blank mold sections to prevent'vacuum leakage along thesesurfaces and to reduce to a minimum any irregular surface formation inthe blankl adjacent the parting line of the blank mold. Inf the eventinitial closing of the blank mold does not also cause positive sealingcontact between said blank mold and; the corresponding neck mold, as isessential in obtaining roper operating conditions, the blank mold) ismoved vertically upward due 'to relative movement between the inclinedvcam surfaces 26 and 27 on the holders and Iarms, causin snug sealingcontact between the blank an neck molds. By constant exertion ofpressure on the blank mold arms 12 so that they tend to move inwardlyafter the blank mold is completely closed, sealing contact between theadjacent surfaces of the blank and neck molds may be obtained andpositively maintained. lWiththe above described conditions it is evidentvthat leakage of vacuum due to-im roper engagement between the blank anneck molds will be avoided and the blank and neck mold cavities ma?1therefore be completelyfilled with mo ten glass. Accordingly, glasswareof uniform weight and quality may be produced. Modifications may be4resorted to within the spirit and scope of the appended claims.

What I claim is:

1. In combination, a neck mold, a partible two section blank moldarranged in a plane below the neck mold, a'pair of holders for the blankmold sections, a pair of blank mold arms sup orting the holdersandmovable to alternate y open' and close the mold amd therebyperiodically place the latter in register wit the neck mold, andconnection between the holders-and arms lwhereby movement of the armscauses upward movement of the closed blank mold into sealing contactwith the neck mold.

2. In combination, a neck mold, a partible twosection blank moldarranged in a plane below the neck mold, holders individual to the blankmold sections, a pair of blank mold arms supporting the holders andblank mold sections, and means whereby mold closing movement of saidarms causes relative horizontal `movement between said arms and holders,the moldarms andholders having contacting cam surfaces so arranged thatsaid relative horizontal movement also moves the holders and blank moldsections upwardly causing sealing contact betweenA thelatter and theneckmold.

r3. In combination, a neck mold, a partible two section blank moldarranged ina plane Lemons below the neck lmold, holders individual tothe blank mold sections, a pair of blank mold arms supporting theholders and blank mold sections, means whereby mold closing movement ofsaid arms causes relative horizontal movement between said arms andholders, the mold arms and holders having contacting cam surfaces soarranged that said relative horizontal movement also moves the holdersand blank mold sectionsrupwardly causing sealing contact between thelatter and the neck mold, and means for causing saidv relativehorizontal movement of the mold arms and holders to follow apredetermined path.

4. In combination, a neck mold, a partible two section blank moldarranged in a plane below the neck mold, holders individual to the blankmold sections, a pair of blank mold arms supporting the holders andvblank mold section, means whereby mold closing movement yof said armscauses relative horizontal movement between said arms and holders meanswhereby said relative movement of the mold arms and holders results inupward movement of the blank mold sections into contact with the neckmold, and means for positively guiding the holders in a predeterminedpath on the mold arms during said movement. 5. In combination, apartible two section blank mold, a pair of blank mold arms adapted toalternately open and close the blank mold, and cam devices mounted onthe upper sides of the arms for imparting vertical movement t'o the moldafter the latter has been closed and while said arms continue their moldclosing movement.

6. In combination, a neck mold, a partible twol section blank moldarranged in a plane below the neck mold, a horizontally disposed flangeat the upper end of each mold section, said flange having a verticalopening therein, a holder for each mold section having a stud extendingupwardly through the corresponding opening, mold arms supporting .theholders 'and mold sections and operative to alternately open and closethe mold, andmeans whereby the movement of the mold arms inwardly beyondthe point necessary to close the blank mold causes upward movement ofthe holders and blank mold section, bringing said mold sections and neckmolds into sealing contact with one another. 4

7. In combination, a neck mold, a .partible two section blank moldarranged in a plane below the neck mold, a horizontally disposed flangeat the upper end of each mold section, said ilange having a verticalopening therein, a holder for each mold section having a stud extendingupwardly through the correspondlng opening, mold arms supporting theholders and mold sections and operative to alternately open and closethe mold, means whereby the movement of the mold arms in- June, 1930.

I JOSEPH P. BENOIT.

